Investing in Regenerative Agriculture and Food

200 euros in a bank account, no contract, and a vision. Six and a half years later: 160,000 trees, a soil temperature at 15cm depth of a constant 21°C — while the bare field metres away peaks at 38°C — and a landscape so full of birds that visitors ask to walk through it in silence.
Marc Leiber, founder of Grow Back and farmer at Quinta das Abelhas, in Portugal, is German agroforestry practitioner who spent nine months on Ernst Götsch's farm in Brazil, arrived in Portugal's Alentejo with almost nothing, and has been quietly building what he calls a Montado-plus, adding the missing layers back into Europe's most famous silvopasture system, ever since.
We walk the land together, step outside the gate to stand in the bare control field metres away, and talk about what six and a half years of syntropic-inspired practice actually looks like when it works. Including why eucalyptus, widely considered a villain in the Portuguese landscape, might be one of the most generous trees in it.
In this episode:
— How a student group got Wageningen University to fund Ernst Götsch's first visit to Northern Europe
— Starting a farm with 200 euros, no contract, and acorns gathered by hand for six weeks
— Why the Montado's structure is ecologically upside down and what restoring it does to temperature, water, and biodiversity
— Why eucalyptus is not the problem — and how to use it to grow a native forest
— How to prune cork and holm oaks so they actually thrive
— Why in these systems, one plus one equals three or, as someone put it, syntropic farming is measured in cubic metres, not square metres
— What Marc would do with €1 billion, and why his magic wand answer is a shift in mindset rather than a farming practice
More about this episode.
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Find out more about our Generation-Re investment syndicate:
https://gen-re.land/
Thank you to our Field Builders Circle for supporting us. Learn more here
Support the show
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In Investing in Regenerative Agriculture and Food podcast show we talk to the pioneers in the regenerative food and agriculture space to learn more on how to put our money to work to regenerate soil, people, local communities and ecosystems while making an appropriate and fair return. Hosted by Koen van Seijen.
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The above references an opinion and is for information and educational purposes only. It is not intended to be investment advice. Seek a duly licensed financial advisor or investment professional before making any financial decisions.
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Dimitri Tsitos, co-founder of Agrosystemic, left Greece a decade ago, spent years working across European farming systems, and eventually landed in Portugal to run what has become one of the most rigorously monitored regenerative trials in Mediterranean intensive tree crop agriculture. He is the lead on the field research side of the Arbo-Innova project, a multi-farm, multi-consortium research platform focused specifically on the question of whether regenerative practices can be meaningfully integrated into the intensive orchard systems that now cover hundreds of thousands of hectares across the Iberian Peninsula.
A five-hectare plot of intensive almonds at Monta Silveira Farm, in Portugal, fenced against deer, planted at the same density as the conventional neighbours surrounding it on all sides, and now in its third growing season: that is where this conversation takes place. The trees are about two metres tall. The interlines are green with different cover crop mixes. One area is under plastic mulch; another has clovers growing in the tree lines themselves. The data is beginning to come in, and what it is showing — on nitrogen levels inside the tree, on herbicide use, on fungal disease pressure, on water infiltration — is quietly shifting the conversations Dimitri is having with an industry that, until recently, was mostly watching from a distance.
In this walk-and-talk episode, recorded at 8am on a May morning in Portugal, birds audible throughout, with the 8,000 hectares of conventional intensive almonds next door visible at every turn, we get into why cover cropping can fail spectacularly at 70 euros a hectare and why that matters enormously for adoption, what clovers on the tree berm are doing to nitrogen inside the almond tree (and what they’re competing for in return), why the most intellectually honest conventional growers are the ones leaning in first, how the J-curve of regenerative transition can be quantified and eventually financed, and why the real metric of progress might be the moment a farmer asks you to slow down.
More about this episode.
Thoughts? Ideas? Questions? Send us a message!
Find out more about our Generation-Re investment syndicate:
https://gen-re.land/
Thank you to our Field Builders Circle for supporting us. Learn more here
Support the show
=======
In Investing in Regenerative Agriculture and Food podcast show we talk to the pioneers in the regenerative food and agriculture space to learn more on how to put our money to work to regenerate soil, people, local communities and ecosystems while making an appropriate and fair return. Hosted by Koen van Seijen.
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The above references an opinion and is for information and educational purposes only. It is not intended to be investment advice. Seek a duly licensed financial advisor or investment professional before making any financial decisions.
Feedback, ideas, suggestions? Get in touch!

João Valente, owner of Monte Silveira, took over his family farm in central-eastern Portugal that was running on tobacco, broccoli, and melons with sixty-five people employed year-round, the rotation designed entirely around subsidies. When the tobacco subsidy disappeared at the end of the 1990s, he found himself with a question: what does this land actually want to be? That question led him to organic agriculture conferences in Portugal, to a magazine showing no-till, to a German seed company that flew him to New Zealand and Australia to see holistic planned grazing in action, and eventually to the first Climate Farmers Congress in a castle in Germany, back in 2021, where he helped write the manifesto, brought ham, wine, and olive oil, and met much of the regenerative agriculture network he’s been working with ever since. Today, Monte Silveira manages around 700 hectares of Montado and irrigated annual crops, runs five species of animals, carries sixteen active research projects, has three full-time scientists on staff, and has been no-till since the year 2000.
One plus one, in companion cropping, is not two. It might be three, four, or five: two or three species in the same field, each supporting the others, the vetch fixing nitrogen for the wheat, the wheat stem holding up the climbing vetch, and if one fails the other covers it. João has been doing this long enough now that the yield comparisons with neighbouring monoculture fields aren’t theoretical. And after decades of absorbing the risk alone, he’s at a point where he can start handing the knowledge on, to neighbouring farmers who are curious but can’t afford to fail, to the Portuguese government, which recently invited Monte Silveira to one of only three private companies at the table for the country’s seven-year environmental strategy document, and to consumers through brands, built on cereals and legumes priced to compete with conventional supermarket products, not just to sell to those who can already afford the premium.
In this episode, recorded under the shade of an old farm building during a May heat wave in the Portugal, too hot by then to keep walking the Montado, we get into how a tobacco subsidy became the turning point of a farming life, why João thinks the two groups most drawn to regenerative research are newly graduated scientists and recently retired professors (and almost nobody in between), what it takes to bring the most important conventional almond consultant in Portugal from sceptic to practitioner in under a year, why he would mandate no-till for all dry-land cereal producers in Portugal if he had the legislative pen, what he’d do with a billion euros, and why, given a magic wand, he’d change human ego before he’d change a single farming practice.
More about this episode.
Thoughts? Ideas? Questions? Send us a message!
Find out more about our Generation-Re investment syndicate:
https://gen-re.land/
Thank you to our Field Builders Circle for supporting us. Learn more here
Support the show
=======
In Investing in Regenerative Agriculture and Food podcast show we talk to the pioneers in the regenerative food and agriculture space to learn more on how to put our money to work to regenerate soil, people, local communities and ecosystems while making an appropriate and fair return. Hosted by Koen van Seijen.
👩🏻‍💻 VISIT OUR WEBSITE 
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The above references an opinion and is for information and educational purposes only. It is not intended to be investment advice. Seek a duly licensed financial advisor or investment professional before making any financial decisions.
Feedback, ideas, suggestions? Get in touch!

Diogo Pinho started his scientific career in the first DNA sequencing lab in Portugal, then did a hands-on PhD on the soil microbiome of cork and holm oak, studying why the trees get sick, before spending two years with Biome Makers, a soil microbiome analysis company, running labs and translating bacterial and fungal profiles into colour-coded, farmer-readable reports for growers around the world. Three years ago, a chance conversation at a farm visit twenty minutes from where he was living led him to Monte Silveira, a 700-hectare farm in the Alentejo, where farmer Joao Valente had been testing regenerative practices for years. Diogo came on board as head of research, hired two more scientists, and is now coordinating fifteen different research consortia — universities, policy makers, and environmental associations — all running in parallel on one working farm.
Portugal produces 70% of the world’s cork. And every year, the Montado, the vast savanna-like silvopasture system of cork and holm oaks that makes that possible, and that once covered much of the Mediterranean, is losing between 4,000 and 5,000 hectares. Not to disease, exactly: the disease is just the final hit on a tree already too weak to resist. The underlying cause, Diogo says, is simpler and more fixable than most people realise. The Montado is a system built by human management, and the one thing it was always managed with — grazing animals cycling nutrients back into the soil — has quietly been removed. Bring the animals back, do it well, and the trees can recover.
In this episode — recorded walking the Monte Silveira land on a mild May morning, with horses and sheep audible throughout — we get into how Diogo went from genome sequencing to working on a regenerative farm, why he sees the Montado’s decline as a chronic disease rather than a single crisis, how soil organic matter went from 1% to 3% in seven years without importing fertility, what a clover carpet growing underneath intensive almond trees is doing to herbicide use and nitrogen budgets (and why the 8,000-hectare conventional industry next door is already paying attention), and how a transition finance programme for twenty neighbouring livestock farmers is quietly building a model that could scale well beyond one farm.
More about this episode.
Thoughts? Ideas? Questions? Send us a message!
Find out more about our Generation-Re investment syndicate:
https://gen-re.land/
Thank you to our Field Builders Circle for supporting us. Learn more here
Support the show
=======
In Investing in Regenerative Agriculture and Food podcast show we talk to the pioneers in the regenerative food and agriculture space to learn more on how to put our money to work to regenerate soil, people, local communities and ecosystems while making an appropriate and fair return. Hosted by Koen van Seijen.
👩🏻‍💻 VISIT OUR WEBSITE 
📚 JOIN OUR VIDEO COURSE 
💪🏻 SUPPORT OUR WORK
Join Gumroad
Share it
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Buy us a coffee… or a meal! 
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The above references an opinion and is for information and educational purposes only. It is not intended to be investment advice. Seek a duly licensed financial advisor or investment professional before making any financial decisions.
Feedback, ideas, suggestions? Get in touch!

Lara Espírito Santo grew up shuttling between Rio de Janeiro and her father’s industrial farms in Paraguay and Brazil, traded a planned career in politics and international development for a kitchen job at Silo in London, and went on to co-found SEM, the zero-food-waste restaurant in Lisbon she ran with her partner George McLeod until closing it ten days before this conversation (not for financial reasons, but to figure out what comes next).
Source the cream instead of buying butter, and one ingredient quietly becomes four: butter, buttermilk, then whey and cheese once you split the buttermilk again. That unglamorous bit of dairy chemistry is the mechanic behind Lara’s central claim: you don’t get to zero food waste by managing waste better. You get there by going further back up the supply chain than most kitchens ever bother to look, and only then does the creativity actually start.
In this episode, recorded in Lisbon, we get into how watching the birds disappear from her father’s 20,000-hectare farm pushed her toward activism and then back into restaurants, why SEM’s food costs ran at 17%, against an industry standard of 25–30%, why she closed it anyway, the case for an EU-wide black market in regeneratively raised organ meat, oyster shells turned into dinner plates, and why she’d spend a hypothetical billion euros de-risking the years it takes a farm to convert.
More about this episode.
Thoughts? Ideas? Questions? Send us a message!
Find out more about our Generation-Re investment syndicate:
https://gen-re.land/
Thank you to our Field Builders Circle for supporting us. Learn more here
Support the show
=======
In Investing in Regenerative Agriculture and Food podcast show we talk to the pioneers in the regenerative food and agriculture space to learn more on how to put our money to work to regenerate soil, people, local communities and ecosystems while making an appropriate and fair return. Hosted by Koen van Seijen.
👩🏻‍💻 VISIT OUR WEBSITE 
📚 JOIN OUR VIDEO COURSE 
💪🏻 SUPPORT OUR WORK
Join Gumroad
Share it
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The above references an opinion and is for information and educational purposes only. It is not intended to be investment advice. Seek a duly licensed financial advisor or investment professional before making any financial decisions.
Feedback, ideas, suggestions? Get in touch!